2x+y=4x-y=-13x-2y=104x-2y=15x+2y=5x-3y=-10​

Jawaban:

2x + y = 4

x – y = -1 +

3x = 3

x = 1

3x – 2y = 10

4x – 2y = 15 –

-x = -5

x = 5

x + 2y =5

x – 3y = -10 –

y = 15